!!! in source atom

All topics on the Atoms in any Enterprise Dynamics Library.
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Rene
Posts: 1
Joined: Wednesday 02 March, 2011 - 16:33

!!! in source atom

Post by Rene »

What happens to atoms in the source atom when !!! appears?
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Nienke Valkhoff
Posts: 20
Joined: Tuesday 11 January, 2011 - 09:23

Re: !!! in source atom

Post by Nienke Valkhoff »

The Source creates products based on the Inter-arrival time and Time till first product. If it turns out that the connected Queue is full, the Source cannot send the product. The product will stay in the Source until it can leave. Only then the Source will determine the next arrival time, but it does not take into account the time it spent waiting for the previous product to leave. This disturbs the arrival pattern and the !!! appear to warn you about that.

This doesn't have to be a problem for all models. For example, if you are trying to determine the maximum throughput of a production line assuming that all resources are always available, you will set the inter-arrival times of the sources very low to make sure that the buffers are always full. On the other hand, if you are interested in determining if your system can handle the arrival pattern of products/customers in the system, you will need to adapt your system until the !!! markers no longer appear, for example by explicitly modeling customers walking away if the queue is too long.
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